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Duplicate of A015948.
0

%I #6 Feb 27 2009 03:00:00

%S 1,2,5,4,7,10,15,8,11,14,13,28,21,78,17,16,19,22,49,42,23,26,1577,40

%N Duplicate of A015948.

%K dead

%O 0,2